ASTM D – Free download as PDF File .pdf), Text File .txt) or read online for free. New ASTM Method D With the manufacture of Freon banned by the Montreal Protocol in , the old ASTM method (D ) that used infrared. The FT-IR Environmental Hydrocarbons ASTM D Application Pack contains all of the resources and components necessary to perform efficient analysis of.
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Subtract the volume of acid added to the sample, as recorded in 9. Transfer volumes have been rounded for ease of measurement and calculation. Drain and clean the sample cell. Keep a record of each dilution for determination of the concentration in the sample in If the concentration of the analyte is less than?
Be sure to record the concentration added to the LCS.
If there is doubt about whether the amount of silica gel is adequate, the amount needed should be determined by test. Obtain net values for single-beam and infrared? A solution containing equal volumes of isooctane and octanoic acid will have a density of 0. Take care to avoid insertion of the cell stopper so tightly that the cell d7606 burst from expansion of its contents as it resides in the light beam.
Each replicate must be taken through the complete analytical test method including asmt Introduction of pH paper to an actual sample or sample cap may remove some oil from the sample.
Do not allow the sample to over? If the concentration of non-polar material exceeds the calibration range, dilute the extract to bring the concentration within the calibration range.
FT-IR Environmental Hydrocarbons ASTM D7066 Analysis Pack
NOTE 4—For infrared instruments having computer capability, data may be obtained automatically or as described in Ideally, the calibration curve obtained will be linear refer to Section It is desirable to?
If such an emulsion cannot be broken by any attempted means, the test method is not applicable to the problem sample.
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Powdered sodium sulfate should not be used because water may cause it to solidify. If a composite measurement is required, individual grab samples collected at prescribed time intervals may be analyzed separately and the concentrations averaged. Cap the bottle and shake well. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The LCS must be taken through all of the steps of the analytical method including sample preservation and pretreatment.
NOTE 6—Certain types of samples, such as those containing a large amount of detergent, may form an emulsion during the extraction.
ASTM D – standard test method by Infrared Determination
Alternatively, solid-phase extraction SPEcontinuous liquid-liquid extraction, or other extraction techniques may be used to prevent emulsion formation. To assure the most accurate concentrations, use the smallest serological pipet or syringe for measurements.
Under these circumstances, ast, of the following remedies must be employed: Other grades may be used, provided it is?
If the sodium sulfate cakes when contacted with the extract,? The replicates may be interspersed with samples.
L for solution density of 0. If not, check cells for cleanliness, matching, etc.
Do not rinse the sample bottle with the sample to be analyzed. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
ASTM International takes no position respecting the validity qstm any patent rights asserted in connection with any item mentioned in this standard. If the extract is milky, remove the Na2SO4 cake Section The LCS can be the standard spiking solution Those not adsorbed are measured as nonpolar material.